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[serialization] Sketch out struct serialization.

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This serializes structs, but not any of their members. Unfortunately, all
structs have members (the implicit constructor at the very least), so this
doesn't actually do anything at all and is completely untested.

Immediate goal: round-tripping an empty struct.

Swift SVN r5530
This commit is contained in:
Jordan Rose
2013-06-08 00:18:21 +00:00
parent c8958a232e
commit 413b2ae485
3 changed files with 83 additions and 17 deletions
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31
lib/Serialization/Serialization.cpp
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@@ -253,6 +253,7 @@ void Serializer::writeBlockInfoBlock() {
RECORD(decls_block, BUILTIN_TYPE);
RECORD(decls_block, NAME_ALIAS_TYPE);
RECORD(decls_block, TYPE_ALIAS_DECL);
RECORD(decls_block, STRUCT_DECL);
RECORD(decls_block, NAME_HACK);
BLOCK(INDEX_BLOCK);
@@ -357,8 +358,33 @@ bool Serializer::writeDecl(const Decl *D) {
return true;
}
case DeclKind::Struct: {
auto theStruct = cast<StructDecl>(D);
// FIXME: Handle attributes.
if (!theStruct->getAttrs().empty())
return false;
// FIXME: Handle generics.
if (theStruct->getGenericParams())
return false;
SmallVector<TypeID, 4> inherited;
for (auto parent : theStruct->getInherited())
inherited.push_back(addTypeRef(parent.getType()));
unsigned abbrCode = DeclTypeAbbrCodes[StructLayout::Code];
StructLayout::emitRecord(Out, ScratchRecord, abbrCode,
theStruct->isImplicit(),
inherited);
abbrCode = DeclTypeAbbrCodes[NameHackLayout::Code];
NameHackLayout::emitRecord(Out, ScratchRecord, abbrCode,
theStruct->getName().str());
return true;
}
case DeclKind::OneOf:
case DeclKind::Struct:
case DeclKind::Class:
case DeclKind::Protocol:
return false;
@@ -465,11 +491,12 @@ bool Serializer::writeType(Type ty) {
}
void Serializer::writeAllDeclsAndTypes() {
BCBlockRAII restoreBlock(Out, DECLS_AND_TYPES_BLOCK_ID, 3);
BCBlockRAII restoreBlock(Out, DECLS_AND_TYPES_BLOCK_ID, 8);
registerDeclTypeAbbr<decls_block::BuiltinTypeLayout>();
registerDeclTypeAbbr<decls_block::NameAliasTypeLayout>();
registerDeclTypeAbbr<decls_block::TypeAliasLayout>();
registerDeclTypeAbbr<decls_block::StructLayout>();
registerDeclTypeAbbr<decls_block::NameHackLayout>();
while (!DeclsAndTypesToWrite.empty()) {